Dephosphorylation of Autophosphorylated Regulatory Subunit of Sea Urchin Sperm cAMP-Dependent Histone Kinase by an Endogenous Protein Phosphatase

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概要

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• Seven protein phosphatases were isolated from extracts of spermatozoa. and sperm tails of the sea urchin Hemicentrotus pulcherrimus by ion exchange and gel filtration chromatographies using [32P]-histone and/or p-nitrophenyl phosphate (pNPP) as substrates and characterized for their enzymatic and molecular nature. Two of them isolated from the particulate fraction correspond to the mammalian type 1 and 2B protein phosphatases. Another two obtained from the soluble fraction were similar to the mammalian protein phosphatases, type 2A and 2C. A protein phosphatase corresponding to the mammalian type 1 enzyme (molecular mass of 43 kDa) dephosphorylated the [32P]-autophosphorylated regulatory subunit of H. pulcherrimus sperm cAMP-dependent histone kinase.

• 社団法人日本動物学会の論文
• 1996-10-15

著者

• Suzuki Norio

  Division of Biological Sciences, Graduate School of Science, Hokkaido University

• Hoshino K

  Rigaku Corp. Tokyo Jpn

• Hoshino Katsuaki

  Division Of Biological Sciences Graduate School Of Science Hokkaido University

• Suzuki Norio

  Division Of Biological Sciences Graduate School Of Science Hokkaido University

関連論文

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